Effects of limestone filler fineness on the rheological behavior of cement – Limestone filler grouts

Ain Shams Engineering Journal

Morched Tounsi¹  Mamdooh Alwetaishi²  Rayed Alyousef³  Hisham Alabduljabbar⁴  Omrane Benjeddou⁵ 

[1] Corresponding author at: Prince Sattam bin Abdulaziz University, College of Engineering, Civil Engineering Department, Alkharj, Saudi Arabia.;University of Tunis El Manar, National Engineering School of Tunis, Civil Engineering Laboratory, Tunis, Tunisia;Department of Civil Engineering, College of Engineering, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;Higher Institute of Technological Studies of Sfax, Department of Civil Engineering, Sfax, Tunisia;Prince Sattam bin Abdulaziz University, College of Engineering, Department of Civil Engineering, Alkharj 16273, Saudi Arabia;

关键词: Tests;    Theoretical model;    Specific surface;    Grout;    Limestone;    Rheology;   

DOI  :  

来源: DOAJ

【 摘 要 】

An acceptable viscosity and an easy penetrability of cement - limestone filler grout in the granular matrix of self compacting concrete are an important factors that affecting both its rheological and its hardened properties. This experimental and theoretical work consists to study the effect of limestone filler fineness on the rheological behavior of cement - limestone filler grout. In the first part, five different grouts were prepared by varying the Blaine Specific Surface (BSS) of the limestone filler, 3060, 4750, 6320, 7680 and 9440 cm2/g, respectively. A large number of properties relating to the rheology and the stability are carried out on the five grouts such as grain dispersion, density, volume concentration of solid, dynamic viscosity and Marsh funnel flow. The second part consists to develop a theoretical model to predict the different rheological properties of the grout as function of limestone filler BSS. The results show that the rheological properties of cement-limestone filler grout such as the dispersion percentage, the intergranular distance and the flow time are strongly affected by the limestone fillers fineness. In addition, the experimental and the predicted results present a good agreement.

【 授权许可】

Unknown